1304143040 has 28 divisors (see below), whose sum is σ = 3105491376. Its totient is φ = 521657088.

The previous prime is 1304143037. The next prime is 1304143073. The reversal of 1304143040 is 403414031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2037404 + ... + 2038043.

Almost surely, 2^1304143040 is an apocalyptic number.

1304143040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304143040 is an abundant number, since it is smaller than the sum of its proper divisors (1801348336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1304143040 is an equidigital number, since it uses as much as digits as its factorization.

1304143040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4075464 (or 4075454 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1304143040 is about 36112.9206794466. The cubic root of 1304143040 is about 1092.5510598279.

Adding to 1304143040 its reverse (403414031), we get a palindrome (1707557071).

The spelling of 1304143040 in words is "one billion, three hundred four million, one hundred forty-three thousand, forty".